X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;ds=sidebyside;f=src%2Fbin%2Flttng-sessiond%2Fsession.h;h=3b3380c3f4d8f5ec112baedab274969f59765cee;hb=d086f507d02078aed618ab291a0bc4a634958fa3;hp=48dc44a33d632efaff87598d1057f7569b83e584;hpb=d7ba13889c8692b14f99238ddf2721ed78df89d2;p=lttng-tools.git

diff --git a/src/bin/lttng-sessiond/session.h b/src/bin/lttng-sessiond/session.h
index 48dc44a33..3b3380c3f 100644
--- a/src/bin/lttng-sessiond/session.h
+++ b/src/bin/lttng-sessiond/session.h
@@ -22,6 +22,7 @@
 #include <urcu/list.h>
 
 #include <common/hashtable/hashtable.h>
+#include <lttng/rotation.h>
 
 #include "snapshot.h"
 #include "trace-kernel.h"
@@ -113,6 +114,54 @@ struct ltt_session {
 	 * Path where to keep the shared memory files.
 	 */
 	char shm_path[PATH_MAX];
+	/*
+	 * Node in ltt_sessions_ht_by_id.
+	 */
+	struct lttng_ht_node_u64 node;
+	/* Number of session rotation for this session. */
+	uint64_t rotate_count;
+	/*
+	 * Rotation is pending between the time it starts until the consumer has
+	 * finished extracting the data. If the session uses a relay, data related
+	 * to a rotation can still be in flight after that, see
+	 * rotate_pending_relay.
+	 */
+	bool rotate_pending;
+	/* Current status of a rotation. */
+	enum lttng_rotation_status rotation_status;
+	/*
+	 * Number of channels waiting for a rotation.
+	 * When this number reaches 0, we can handle the rename of the chunk
+	 * folder and inform the client that the rotate is finished.
+	 */
+	unsigned int nr_chan_rotate_pending;
+	struct {
+		/*
+		 * When the rotation is in progress, the temporary path name is
+		 * stored here. When the rotation is complete, the final path name
+		 * is here and can be queried with the rotate_pending call.
+		 */
+		char current_rotate_path[LTTNG_PATH_MAX];
+		/*
+		 * The path where the consumer is currently writing after the first
+		 * session rotation.
+		 */
+		char active_tracing_path[LTTNG_PATH_MAX];
+	} rotation_chunk;
+	/*
+	 * The timestamp of the beginning of the previous chunk. For the
+	 * first chunk, this is the "lttng start" timestamp. For the
+	 * subsequent ones, this copies the current_chunk_start_ts value when
+	 * a new rotation starts. This value is used to set the name of a
+	 * complete chunk directory, ex: "last_chunk_start_ts-now()".
+	 */
+	time_t last_chunk_start_ts;
+	/*
+	 * This is the timestamp when a new chunk starts. When a new rotation
+	 * starts, we copy this value to last_chunk_start_ts and replace it
+	 * with the current timestamp.
+	 */
+	time_t current_chunk_start_ts;
 };
 
 /* Prototypes */
@@ -125,6 +174,7 @@ void session_unlock(struct ltt_session *session);
 void session_unlock_list(void);
 
 struct ltt_session *session_find_by_name(const char *name);
+struct ltt_session *session_find_by_id(uint64_t id);
 struct ltt_session_list *session_get_list(void);
 
 int session_access_ok(struct ltt_session *session, uid_t uid, gid_t gid);